Marathon world record-holder Paula Radcliffe will run the first event to be staged at London's Olympic Stadium since the 2012 Games later today.
Radcliffe, who was unable to compete at the London Olympics due to injury, will join a host of sporting stars including Olympic gold medallists Sir Chris Hoy and Victoria Pendleton, who are more used to cycling than running.
They will be among the 12,500 people taking part in the five-mile (eight-kilometre) National Lottery Anniversary Run, in which competitors will complete the final 328 yards (300m) on the Olympic Stadium's track.
Radcliffe has predicted the event would "recapture the spirit of the London 2012".
More top news
In a tweet President Trump said the lift on the ban was on hold until he was able to "review all conservation facts".
The Government is to launch a consultation on whether plastic packaging should be taxed in an effort to tackle waste.
A new set of stamps is being issued to commemorate the 70th wedding anniversary of the Queen and Duke of Edinburgh.